Quantum dot-based indistinguishable and entangled photon sources at telecom wavelengths

Operation co-funded by EU cohesion policy (European Regional Development Fund (ERDF)) under the programme Smart growth - PL - ERDF (2014PL16RFOP001), managing authority: Ministerstwo obsługujące ministra właściwego ds. rozwoju regionalnego. The source names no beneficiary for this operation. Location: Trójmiejski (NUTS PL633); Poland. Budget: total eligible expenditure EUR 175,962.23; EU co-financing EUR 175,962.23 (co-financing rate 100%), as stated by the source. Runs 2018-07-01 to 2021-03-28. Source: Kohesio, EU cohesion policy projects managed by national and regional authorities (not CORDIS). Summary from Kohesio (English machine translation by the source): Project goal is to investigate experimentally possible of generation indistinguishable photons and entangled photon pairs from epitaxial quantum dots (QDS) integrated into optimised photonic structures (from TU Berlin) emitting at telecom wavelengths (1.3-1.55) µm. These states are crucial for implementation of advanced quantum computation and communication schemes (e.g., quantum repeater) in the NIR in order to bring them closer to practical limits (compatibility with existing fiber networks or silicon photonics). For the project strain-engineered GaAs- and InP-based QDS will be used. To demonstrate and optimise indistinguishability of consecutive photons two-photon interference will be measured. For polarisation entanglement biexciton-exciton cascade with external control of fine structure splitting will be tested by cross-correlation measurements in various polarisation bases and quantum tomography of two-photon state. The key experiments will be specially set for IR detection.

Original source.

Source: Kohesio (EU cohesion policy projects), European Commission, Directorate-General for Regional and Urban Policy (DG REGIO). Retrieved 2026-10-21. Licence: CC0 1.0 (Cohesion Open Data Platform, dataset 2014-2020 Kohesio projects). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: public domain dedication (CC0 1.0).

AI-assisted summary: The project investigates the generation of indistinguishable photons and entangled photon pairs from quantum dots at telecom wavelengths, co-funded by the EU with a budget of EUR 175,962.23, running from July 2018 to March 2021 in Trójmiejski, Poland. Suggested technology pillar: communication. Generated by AI from the public source text; it may contain errors and the original source is authoritative.